/***************************************************
**  Altimètre BMP 180                             **
**  Commande de servo en dépassement de consigne  **
**  Consigne par potentiomètre                    **
**  XIAO-ESP32-C3 broches utilisées :             **
**  0 -> A0 -> Potar
**  4 -> D4 -> I2C SDA
**  5 -> D5 -> I2C SCL
**          -> Servo IN
**          -> Servo OUT
****************************************************/

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <Adafruit_BMP085.h>

#define pinPotar  A0

LiquidCrystal_I2C lcd(0x27,16,2);
Adafruit_BMP085 BMP;

float altiIni = 0;

void setup() {
  pinMode(pinPotar, INPUT);
  // Initialisation LCD
  lcd.init();
  lcd.backlight();
  lcd.clear();
  // Initialisation BMP180
  BMP.begin();
  lcd.print("Altimetre BMP180");
  lcd.setCursor(0,1);
  lcd.print("Initialisation...");
  delay(500);
  altiIni = BMP.readAltitude();
  delay(500);
  lcd.setCursor(0,1);
  lcd.print("Termine.        ");
  
  Serial.begin(115200);
  delay(2000);
  lcd.clear();
  
}

void loop() {
  // Lecture consigne
  int consigne = analogRead(pinPotar);
  consigne = 10 * map(consigne,0,4095,0,40);

  float altitude = BMP.readAltitude();
  lcd.setCursor(0,0);
  lcd.print("Alti :");
  lcd.print(altitude);
  lcd.print("m");
  lcd.setCursor(0,1);
  lcd.print("Cons :");
  lcd.print(consigne);
  lcd.print("m    ");
  
  delay(200);
}